fix jenkins test job

Change-Id: Iab57fd619e080983d99e6d3ddc684f9a41afefae
diff --git a/Jenkinsfile-attworkflow-test b/Jenkinsfile-attworkflow-test
index 0029a55..79b386e 100644
--- a/Jenkinsfile-attworkflow-test
+++ b/Jenkinsfile-attworkflow-test
@@ -23,7 +23,7 @@
             stage('Download Cord-Tester and Voltha Repo') {
                 timeout(2) {
                     sh returnStdout: true, script: """
-                    rm -rf helm-charts cord-tester
+                    rm -rf helm-charts cord-tester voltha
                     git clone -b ${branch} ${cordRepoUrl}/helm-charts
                     git clone -b ${branch} ${cordRepoUrl}/cord-tester
                     git clone -b ${branch} ${cordRepoUrl}/voltha